my answer: 39/64


1-[1-(1-(1/2)(1/2))(1/2)]^2 = 39/64

所有跟帖: 

formula are ...,the denometer can't be 64. -jinjing- 給 jinjing 發送悄悄話 (0 bytes) () 06/19/2010 postreply 19:25:24

correct -wfmi- 給 wfmi 發送悄悄話 wfmi 的博客首頁 (0 bytes) () 06/28/2010 postreply 11:48:50

請您先登陸,再發跟帖!